1. #1
    Getting flats on my circular pocketing. All sizes of circle affected, more or less on the north quadrant as viewed from operator position. Running Mach3 on Seig X3.
    Seems like a software/setting problem? I seem to remember this coming up before. But can`t recall where.
    Any leads appreciated.

  2. Got ballscrews fitted ?
    Flats on circles are normally mechanical, slack in nuts etc.
    You can compensate in mach under Backlash compensation but it's a cludge.
    For one it doesn't work correctly and secondly if there is free play, even compensated for, the cutter can grab and pull the work.
    John S -

  3. #3
    JAZZCNC's Avatar
    Lives in wakefield, United Kingdom. Last Activity: 13 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 5-6 years. Has a total post count of 5,443. Received thanks 834 times, giving thanks to others 29 times.
    Quote Originally Posted by John S View Post
    slack in nuts etc.
    John's the leading expert when it comes to "Slack Nuts".!!. . . . Viagra works better than backlash Comp Hey John. .

    Agree with him thou 99% sure it will be Sloppy nuts or loose couplings.!!

  4. #4
    Check your software for overlap values or lead in lead out and also cutter comp activation points

  5. Yup Jazz is right, that viagria isn't all it's cracked up to be.
    Gave mine to me grandad, stops him rolling out of bed at night
    John S -

  6. #6
    Ah right! - To get good circles. You need to securely tighten the main casting to Y axis ball screw journal.
    My "nuts" are now secure in a steel thong, but now have the problem of walking a bit odd!
    Apologies to have wasted any ones time.

  7. #7
    My father-in-law had Viagra to stop him pissing on his slippers.
    Last edited by cropwell; 03-10-2013 at 12:05 PM.

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